Vitapet Normal Strength R~A Formula contains a unique blend of selected fish and vegetable oils, rich in polyunsaturates, especially the omega 3 nutrients, EPA (Eicosapentaenic Acid) and DHA (Docosahexaenoic Acid) as well as Vitamins A, D and E supplying the active principles of wheatgerm oil. The omega 3 fatty acids play an important role in the animal's body metabolism. Research has indicated that increased levels of EPA & DHA will help to maintain supple and mobile joints. These two important nutrients have been identified as being extremely beneficial in helping maintain a healthy heart and circulation.